/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.grails.plugins.databasemigration.liquibase

import groovy.transform.CompileStatic

import liquibase.database.DatabaseConnection
import liquibase.database.OfflineConnection
import liquibase.exception.DatabaseException
import liquibase.ext.hibernate.database.HibernateDatabase
import liquibase.snapshot.DatabaseSnapshot
import liquibase.snapshot.JdbcDatabaseSnapshot
import liquibase.snapshot.SnapshotControl
import liquibase.structure.DatabaseObject
import org.hibernate.boot.Metadata
import org.hibernate.boot.MetadataSources
import org.hibernate.dialect.Dialect
import org.hibernate.service.ServiceRegistry

import org.grails.orm.hibernate.HibernateDatastore

@CompileStatic
class GormDatabase extends HibernateDatabase {

    final String shortName = 'GORM'
    final String DefaultDatabaseProductName = 'getDefaultDatabaseProductName'

    private Dialect dialect
    private Metadata metadata
    DatabaseConnection connection

    GormDatabase() {
    }

    GormDatabase(Dialect dialect, ServiceRegistry serviceRegistry, HibernateDatastore hibernateDatastore) {
        this.dialect = dialect
        this.metadata = hibernateDatastore.getMetadata()
        SnapshotControl snapshotControl = new SnapshotControl(this, null, null)
        GormDatabase database = this
        OfflineConnection connection = new OfflineConnection('offline:gorm', null) {
            DatabaseSnapshot getSnapshot(DatabaseObject[] examples) {
                new JdbcDatabaseSnapshot(examples, database, snapshotControl)
            }
        }
        this.connection = connection
    }

    @Override
    Dialect getDialect() {
        dialect
    }

    /**
     * Return the hibernate {@link Metadata} used by this database.
     */
    @Override
    Metadata getMetadata() {
        metadata
    }

    @Override
    protected void configureSources(MetadataSources sources) throws DatabaseException {
        //no op
    }

    @Override
    boolean isCorrectDatabaseImplementation(DatabaseConnection conn) throws DatabaseException {
        return false
    }

}
